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Finding the Fourth Proportional to 64,305.40, 96,425.70 and 38,018.20

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Solution

The fourth proportional to 64,305.40, 96,425.70 and 38,018.20 is: 57,008.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,305.40 : 96,425.70 = 38,018.20 : x
  2. Step 2: Convert to fraction form
    64,305.40/96,425.70 = 38,018.20/x
  3. Step 3: Cross multiply
    64,305.40x = 96,425.70 × 38,018.20
  4. Step 4: Simplify right side
    64,305.40x = 3,665,931,547.74
  5. Step 5: Solve for x
    x = 3,665,931,547.74/64,305.40
  6. Step 6: Final answer
    x = 57,008.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.