Home / 74,157.84-102,345.15-42,331.52

Finding the Fourth Proportional to 74,157.84, 102,345.15 and 42,331.52

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Solution

The fourth proportional to 74,157.84, 102,345.15 and 42,331.52 is: 58,421.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,157.84 : 102,345.15 = 42,331.52 : x
  2. Step 2: Convert to fraction form
    74,157.84/102,345.15 = 42,331.52/x
  3. Step 3: Cross multiply
    74,157.84x = 102,345.15 × 42,331.52
  4. Step 4: Simplify right side
    74,157.84x = 4,332,425,764.13
  5. Step 5: Solve for x
    x = 4,332,425,764.13/74,157.84
  6. Step 6: Final answer
    x = 58,421.68

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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.