Home / 98,962.24-136,586.18-56,520.78

Finding the Fourth Proportional to 98,962.24, 136,586.18 and 56,520.78

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Solution

The fourth proportional to 98,962.24, 136,586.18 and 56,520.78 is: 78,009.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,962.24 : 136,586.18 = 56,520.78 : x
  2. Step 2: Convert to fraction form
    98,962.24/136,586.18 = 56,520.78/x
  3. Step 3: Cross multiply
    98,962.24x = 136,586.18 × 56,520.78
  4. Step 4: Simplify right side
    98,962.24x = 7,719,957,430.82
  5. Step 5: Solve for x
    x = 7,719,957,430.82/98,962.24
  6. Step 6: Final answer
    x = 78,009.12

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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.