Home / 72,132.51-99,570.64-64,565.49

Finding the Fourth Proportional to 72,132.51, 99,570.64 and 64,565.49

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Solution

The fourth proportional to 72,132.51, 99,570.64 and 64,565.49 is: 89,125.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,132.51 : 99,570.64 = 64,565.49 : x
  2. Step 2: Convert to fraction form
    72,132.51/99,570.64 = 64,565.49/x
  3. Step 3: Cross multiply
    72,132.51x = 99,570.64 × 64,565.49
  4. Step 4: Simplify right side
    72,132.51x = 6,428,826,999.80
  5. Step 5: Solve for x
    x = 6,428,826,999.80/72,132.51
  6. Step 6: Final answer
    x = 89,125.24

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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.