Home / 78,457,409.28-108,272,220.77-43,179,276.21

Finding the Fourth Proportional to 78,457,409.28, 108,272,220.77 and 43,179,276.21

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Solution

The fourth proportional to 78,457,409.28, 108,272,220.77 and 43,179,276.21 is: 59,587,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,457,409.28 : 108,272,220.77 = 43,179,276.21 : x
  2. Step 2: Convert to fraction form
    78,457,409.28/108,272,220.77 = 43,179,276.21/x
  3. Step 3: Cross multiply
    78,457,409.28x = 108,272,220.77 × 43,179,276.21
  4. Step 4: Simplify right side
    78,457,409.28x = 4,675,116,126,282,033
  5. Step 5: Solve for x
    x = 4,675,116,126,282,033/78,457,409.28
  6. Step 6: Final answer
    x = 59,587,949.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.