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Finding the Fourth Proportional to 65,642.56, 90,526.08 and 58,060.96

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Solution

The fourth proportional to 65,642.56, 90,526.08 and 58,060.96 is: 80,070.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,642.56 : 90,526.08 = 58,060.96 : x
  2. Step 2: Convert to fraction form
    65,642.56/90,526.08 = 58,060.96/x
  3. Step 3: Cross multiply
    65,642.56x = 90,526.08 × 58,060.96
  4. Step 4: Simplify right side
    65,642.56x = 5,256,031,109.84
  5. Step 5: Solve for x
    x = 5,256,031,109.84/65,642.56
  6. Step 6: Final answer
    x = 80,070.48

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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.