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Finding the Fourth Proportional to 39,885.80, 59,828.70 and 25,111.40

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Solution

The fourth proportional to 39,885.80, 59,828.70 and 25,111.40 is: 37,667.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,885.80 : 59,828.70 = 25,111.40 : x
  2. Step 2: Convert to fraction form
    39,885.80/59,828.70 = 25,111.40/x
  3. Step 3: Cross multiply
    39,885.80x = 59,828.70 × 25,111.40
  4. Step 4: Simplify right side
    39,885.80x = 1,502,382,417.18
  5. Step 5: Solve for x
    x = 1,502,382,417.18/39,885.80
  6. Step 6: Final answer
    x = 37,667.10

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1.5x scale

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.