Home / 39,988.79-59,889.90-31,612.58

Finding the Fourth Proportional to 39,988.79, 59,889.90 and 31,612.58

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Solution

The fourth proportional to 39,988.79, 59,889.90 and 31,612.58 is: 47,345.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,988.79 : 59,889.90 = 31,612.58 : x
  2. Step 2: Convert to fraction form
    39,988.79/59,889.90 = 31,612.58/x
  3. Step 3: Cross multiply
    39,988.79x = 59,889.90 × 31,612.58
  4. Step 4: Simplify right side
    39,988.79x = 1,893,274,254.94
  5. Step 5: Solve for x
    x = 1,893,274,254.94/39,988.79
  6. Step 6: Final answer
    x = 47,345.12

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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.