Home / 78,871.48-118,326.05-26,281.42

Finding the Fourth Proportional to 78,871.48, 118,326.05 and 26,281.42

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Solution

The fourth proportional to 78,871.48, 118,326.05 and 26,281.42 is: 39,428.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,871.48 : 118,326.05 = 26,281.42 : x
  2. Step 2: Convert to fraction form
    78,871.48/118,326.05 = 26,281.42/x
  3. Step 3: Cross multiply
    78,871.48x = 118,326.05 × 26,281.42
  4. Step 4: Simplify right side
    78,871.48x = 3,109,776,616.99
  5. Step 5: Solve for x
    x = 3,109,776,616.99/78,871.48
  6. Step 6: Final answer
    x = 39,428.40

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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.