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Finding the Fourth Proportional to 39,765.31, 59,657.72 and 19,784.23

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Solution

The fourth proportional to 39,765.31, 59,657.72 and 19,784.23 is: 29,681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,765.31 : 59,657.72 = 19,784.23 : x
  2. Step 2: Convert to fraction form
    39,765.31/59,657.72 = 19,784.23/x
  3. Step 3: Cross multiply
    39,765.31x = 59,657.72 × 19,784.23
  4. Step 4: Simplify right side
    39,765.31x = 1,180,282,053.76
  5. Step 5: Solve for x
    x = 1,180,282,053.76/39,765.31
  6. Step 6: Final answer
    x = 29,681.20

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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.