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Finding the Fourth Proportional to 78,417.91, 108,217.16 and 46,153.74

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Solution

The fourth proportional to 78,417.91, 108,217.16 and 46,153.74 is: 63,692.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,417.91 : 108,217.16 = 46,153.74 : x
  2. Step 2: Convert to fraction form
    78,417.91/108,217.16 = 46,153.74/x
  3. Step 3: Cross multiply
    78,417.91x = 108,217.16 × 46,153.74
  4. Step 4: Simplify right side
    78,417.91x = 4,994,626,125.09
  5. Step 5: Solve for x
    x = 4,994,626,125.09/78,417.91
  6. Step 6: Final answer
    x = 63,692.42

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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.