Home / 86,681.76-130,126.32-51,637.92

Finding the Fourth Proportional to 86,681.76, 130,126.32 and 51,637.92

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Solution

The fourth proportional to 86,681.76, 130,126.32 and 51,637.92 is: 77,518.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,681.76 : 130,126.32 = 51,637.92 : x
  2. Step 2: Convert to fraction form
    86,681.76/130,126.32 = 51,637.92/x
  3. Step 3: Cross multiply
    86,681.76x = 130,126.32 × 51,637.92
  4. Step 4: Simplify right side
    86,681.76x = 6,719,452,502.05
  5. Step 5: Solve for x
    x = 6,719,452,502.05/86,681.76
  6. Step 6: Final answer
    x = 77,518.64

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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.