Home / 78,684.30-118,075.66-31,937.18

Finding the Fourth Proportional to 78,684.30, 118,075.66 and 31,937.18

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Solution

The fourth proportional to 78,684.30, 118,075.66 and 31,937.18 is: 47,925.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,684.30 : 118,075.66 = 31,937.18 : x
  2. Step 2: Convert to fraction form
    78,684.30/118,075.66 = 31,937.18/x
  3. Step 3: Cross multiply
    78,684.30x = 118,075.66 × 31,937.18
  4. Step 4: Simplify right side
    78,684.30x = 3,771,002,936.82
  5. Step 5: Solve for x
    x = 3,771,002,936.82/78,684.30
  6. Step 6: Final answer
    x = 47,925.74

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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.