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Finding the Fourth Proportional to 79,200.74, 109,296.40 and 42,901.40

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Solution

The fourth proportional to 79,200.74, 109,296.40 and 42,901.40 is: 59,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,200.74 : 109,296.40 = 42,901.40 : x
  2. Step 2: Convert to fraction form
    79,200.74/109,296.40 = 42,901.40/x
  3. Step 3: Cross multiply
    79,200.74x = 109,296.40 × 42,901.40
  4. Step 4: Simplify right side
    79,200.74x = 4,688,968,574.96
  5. Step 5: Solve for x
    x = 4,688,968,574.96/79,200.74
  6. Step 6: Final answer
    x = 59,203.60

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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.