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Finding the Fourth Proportional to 70,287.32, 96,995.64 and 38,455.76

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Solution

The fourth proportional to 70,287.32, 96,995.64 and 38,455.76 is: 53,068.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,287.32 : 96,995.64 = 38,455.76 : x
  2. Step 2: Convert to fraction form
    70,287.32/96,995.64 = 38,455.76/x
  3. Step 3: Cross multiply
    70,287.32x = 96,995.64 × 38,455.76
  4. Step 4: Simplify right side
    70,287.32x = 3,730,041,052.89
  5. Step 5: Solve for x
    x = 3,730,041,052.89/70,287.32
  6. Step 6: Final answer
    x = 53,068.48

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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.