Home / 72,386.61-99,897.60-40,565.76

Finding the Fourth Proportional to 72,386.61, 99,897.60 and 40,565.76

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Solution

The fourth proportional to 72,386.61, 99,897.60 and 40,565.76 is: 55,983.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,386.61 : 99,897.60 = 40,565.76 : x
  2. Step 2: Convert to fraction form
    72,386.61/99,897.60 = 40,565.76/x
  3. Step 3: Cross multiply
    72,386.61x = 99,897.60 × 40,565.76
  4. Step 4: Simplify right side
    72,386.61x = 4,052,422,066.18
  5. Step 5: Solve for x
    x = 4,052,422,066.18/72,386.61
  6. Step 6: Final answer
    x = 55,983.03

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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.