Home / 91,275.23-136,916.64-31,344.89

Finding the Fourth Proportional to 91,275.23, 136,916.64 and 31,344.89

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Solution

The fourth proportional to 91,275.23, 136,916.64 and 31,344.89 is: 47,018.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,275.23 : 136,916.64 = 31,344.89 : x
  2. Step 2: Convert to fraction form
    91,275.23/136,916.64 = 31,344.89/x
  3. Step 3: Cross multiply
    91,275.23x = 136,916.64 × 31,344.89
  4. Step 4: Simplify right side
    91,275.23x = 4,291,637,019.97
  5. Step 5: Solve for x
    x = 4,291,637,019.97/91,275.23
  6. Step 6: Final answer
    x = 47,018.64

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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.