Home / 78,612.24-108,486.96-42,803.76

Finding the Fourth Proportional to 78,612.24, 108,486.96 and 42,803.76

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Solution

The fourth proportional to 78,612.24, 108,486.96 and 42,803.76 is: 59,070.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,612.24 : 108,486.96 = 42,803.76 : x
  2. Step 2: Convert to fraction form
    78,612.24/108,486.96 = 42,803.76/x
  3. Step 3: Cross multiply
    78,612.24x = 108,486.96 × 42,803.76
  4. Step 4: Simplify right side
    78,612.24x = 4,643,649,798.97
  5. Step 5: Solve for x
    x = 4,643,649,798.97/78,612.24
  6. Step 6: Final answer
    x = 59,070.32

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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.