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Finding the Fourth Proportional to 91,124.76, 136,534.05 and 64,698.51

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Solution

The fourth proportional to 91,124.76, 136,534.05 and 64,698.51 is: 96,939.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,124.76 : 136,534.05 = 64,698.51 : x
  2. Step 2: Convert to fraction form
    91,124.76/136,534.05 = 64,698.51/x
  3. Step 3: Cross multiply
    91,124.76x = 136,534.05 × 64,698.51
  4. Step 4: Simplify right side
    91,124.76x = 8,833,549,599.27
  5. Step 5: Solve for x
    x = 8,833,549,599.27/91,124.76
  6. Step 6: Final answer
    x = 96,939.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.