Home / 90,989.11-136,560.35-38,436.31

Finding the Fourth Proportional to 90,989.11, 136,560.35 and 38,436.31

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Solution

The fourth proportional to 90,989.11, 136,560.35 and 38,436.31 is: 57,686.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,989.11 : 136,560.35 = 38,436.31 : x
  2. Step 2: Convert to fraction form
    90,989.11/136,560.35 = 38,436.31/x
  3. Step 3: Cross multiply
    90,989.11x = 136,560.35 × 38,436.31
  4. Step 4: Simplify right side
    90,989.11x = 5,248,875,946.31
  5. Step 5: Solve for x
    x = 5,248,875,946.31/90,989.11
  6. Step 6: Final answer
    x = 57,686.86

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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.