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Finding the Fourth Proportional to 70,043.08, 96,658.99 and 39,828.40

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Solution

The fourth proportional to 70,043.08, 96,658.99 and 39,828.40 is: 54,962.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,043.08 : 96,658.99 = 39,828.40 : x
  2. Step 2: Convert to fraction form
    70,043.08/96,658.99 = 39,828.40/x
  3. Step 3: Cross multiply
    70,043.08x = 96,658.99 × 39,828.40
  4. Step 4: Simplify right side
    70,043.08x = 3,849,773,194.48
  5. Step 5: Solve for x
    x = 3,849,773,194.48/70,043.08
  6. Step 6: Final answer
    x = 54,962.93

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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.