Home / 78,730.76-118,075.08-53,766.56

Finding the Fourth Proportional to 78,730.76, 118,075.08 and 53,766.56

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Solution

The fourth proportional to 78,730.76, 118,075.08 and 53,766.56 is: 80,635.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,730.76 : 118,075.08 = 53,766.56 : x
  2. Step 2: Convert to fraction form
    78,730.76/118,075.08 = 53,766.56/x
  3. Step 3: Cross multiply
    78,730.76x = 118,075.08 × 53,766.56
  4. Step 4: Simplify right side
    78,730.76x = 6,348,490,873.32
  5. Step 5: Solve for x
    x = 6,348,490,873.32/78,730.76
  6. Step 6: Final answer
    x = 80,635.46

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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.