Home / 78,037.66-107,691.18-42,226.90

Finding the Fourth Proportional to 78,037.66, 107,691.18 and 42,226.90

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Solution

The fourth proportional to 78,037.66, 107,691.18 and 42,226.90 is: 58,272.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,037.66 : 107,691.18 = 42,226.90 : x
  2. Step 2: Convert to fraction form
    78,037.66/107,691.18 = 42,226.90/x
  3. Step 3: Cross multiply
    78,037.66x = 107,691.18 × 42,226.90
  4. Step 4: Simplify right side
    78,037.66x = 4,547,464,688.74
  5. Step 5: Solve for x
    x = 4,547,464,688.74/78,037.66
  6. Step 6: Final answer
    x = 58,272.69

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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.