Home / 65,557.60-90,446.16-38,686.66

Finding the Fourth Proportional to 65,557.60, 90,446.16 and 38,686.66

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Solution

The fourth proportional to 65,557.60, 90,446.16 and 38,686.66 is: 53,373.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,557.60 : 90,446.16 = 38,686.66 : x
  2. Step 2: Convert to fraction form
    65,557.60/90,446.16 = 38,686.66/x
  3. Step 3: Cross multiply
    65,557.60x = 90,446.16 × 38,686.66
  4. Step 4: Simplify right side
    65,557.60x = 3,499,059,840.23
  5. Step 5: Solve for x
    x = 3,499,059,840.23/65,557.60
  6. Step 6: Final answer
    x = 53,373.82

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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.