Home / 90,615.61-136,006.45-48,543.20

Finding the Fourth Proportional to 90,615.61, 136,006.45 and 48,543.20

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Solution

The fourth proportional to 90,615.61, 136,006.45 and 48,543.20 is: 72,859.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,615.61 : 136,006.45 = 48,543.20 : x
  2. Step 2: Convert to fraction form
    90,615.61/136,006.45 = 48,543.20/x
  3. Step 3: Cross multiply
    90,615.61x = 136,006.45 × 48,543.20
  4. Step 4: Simplify right side
    90,615.61x = 6,602,188,353.59
  5. Step 5: Solve for x
    x = 6,602,188,353.59/90,615.61
  6. Step 6: Final answer
    x = 72,859.28

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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.