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Finding the Fourth Proportional to 78,898.70, 118,348.65 and 26,308.10

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Solution

The fourth proportional to 78,898.70, 118,348.65 and 26,308.10 is: 39,462.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,898.70 : 118,348.65 = 26,308.10 : x
  2. Step 2: Convert to fraction form
    78,898.70/118,348.65 = 26,308.10/x
  3. Step 3: Cross multiply
    78,898.70x = 118,348.65 × 26,308.10
  4. Step 4: Simplify right side
    78,898.70x = 3,113,528,119.07
  5. Step 5: Solve for x
    x = 3,113,528,119.07/78,898.70
  6. Step 6: Final answer
    x = 39,462.35

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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.