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Finding the Fourth Proportional to 52,637.61, 72,640.95 and 28,765.77

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Solution

The fourth proportional to 52,637.61, 72,640.95 and 28,765.77 is: 39,697.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,637.61 : 72,640.95 = 28,765.77 : x
  2. Step 2: Convert to fraction form
    52,637.61/72,640.95 = 28,765.77/x
  3. Step 3: Cross multiply
    52,637.61x = 72,640.95 × 28,765.77
  4. Step 4: Simplify right side
    52,637.61x = 2,089,572,641.81
  5. Step 5: Solve for x
    x = 2,089,572,641.81/52,637.61
  6. Step 6: Final answer
    x = 39,697.33

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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.