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Finding the Fourth Proportional to 98,566.23, 135,973.98 and 64,560

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Solution

The fourth proportional to 98,566.23, 135,973.98 and 64,560 is: 89,061.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,566.23 : 135,973.98 = 64,560 : x
  2. Step 2: Convert to fraction form
    98,566.23/135,973.98 = 64,560/x
  3. Step 3: Cross multiply
    98,566.23x = 135,973.98 × 64,560
  4. Step 4: Simplify right side
    98,566.23x = 8,778,480,148.80
  5. Step 5: Solve for x
    x = 8,778,480,148.80/98,566.23
  6. Step 6: Final answer
    x = 89,061.74

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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.