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Finding the Fourth Proportional to 72,290.68, 99,582.88 and 61,501.00

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Solution

The fourth proportional to 72,290.68, 99,582.88 and 61,501.00 is: 84,719.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,290.68 : 99,582.88 = 61,501.00 : x
  2. Step 2: Convert to fraction form
    72,290.68/99,582.88 = 61,501.00/x
  3. Step 3: Cross multiply
    72,290.68x = 99,582.88 × 61,501.00
  4. Step 4: Simplify right side
    72,290.68x = 6,124,446,300.17
  5. Step 5: Solve for x
    x = 6,124,446,300.17/72,290.68
  6. Step 6: Final answer
    x = 84,719.72

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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.