Home / 83,702.64-115,432.38-56,885.16

Finding the Fourth Proportional to 83,702.64, 115,432.38 and 56,885.16

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Solution

The fourth proportional to 83,702.64, 115,432.38 and 56,885.16 is: 78,449.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,702.64 : 115,432.38 = 56,885.16 : x
  2. Step 2: Convert to fraction form
    83,702.64/115,432.38 = 56,885.16/x
  3. Step 3: Cross multiply
    83,702.64x = 115,432.38 × 56,885.16
  4. Step 4: Simplify right side
    83,702.64x = 6,566,389,405.48
  5. Step 5: Solve for x
    x = 6,566,389,405.48/83,702.64
  6. Step 6: Final answer
    x = 78,449.01

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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.