Home / 86,572.40-130,066.66-81,792.89

Finding the Fourth Proportional to 86,572.40, 130,066.66 and 81,792.89

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Solution

The fourth proportional to 86,572.40, 130,066.66 and 81,792.89 is: 122,885.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,572.40 : 130,066.66 = 81,792.89 : x
  2. Step 2: Convert to fraction form
    86,572.40/130,066.66 = 81,792.89/x
  3. Step 3: Cross multiply
    86,572.40x = 130,066.66 × 81,792.89
  4. Step 4: Simplify right side
    86,572.40x = 10,638,527,953.71
  5. Step 5: Solve for x
    x = 10,638,527,953.71/86,572.40
  6. Step 6: Final answer
    x = 122,885.91

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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.