Home / 81,637.47-112,674.65-47,666.07

Finding the Fourth Proportional to 81,637.47, 112,674.65 and 47,666.07

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Solution

The fourth proportional to 81,637.47, 112,674.65 and 47,666.07 is: 65,787.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,637.47 : 112,674.65 = 47,666.07 : x
  2. Step 2: Convert to fraction form
    81,637.47/112,674.65 = 47,666.07/x
  3. Step 3: Cross multiply
    81,637.47x = 112,674.65 × 47,666.07
  4. Step 4: Simplify right side
    81,637.47x = 5,370,757,515.80
  5. Step 5: Solve for x
    x = 5,370,757,515.80/81,637.47
  6. Step 6: Final answer
    x = 65,787.90

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1.5x scale

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.