Home / 91,088.40-136,604.52-31,913.04

Finding the Fourth Proportional to 91,088.40, 136,604.52 and 31,913.04

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Solution

The fourth proportional to 91,088.40, 136,604.52 and 31,913.04 is: 47,859.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,088.40 : 136,604.52 = 31,913.04 : x
  2. Step 2: Convert to fraction form
    91,088.40/136,604.52 = 31,913.04/x
  3. Step 3: Cross multiply
    91,088.40x = 136,604.52 × 31,913.04
  4. Step 4: Simplify right side
    91,088.40x = 4,359,465,510.94
  5. Step 5: Solve for x
    x = 4,359,465,510.94/91,088.40
  6. Step 6: Final answer
    x = 47,859.72

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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.