Home / 78,681.48-118,043.28-34,311.84

Finding the Fourth Proportional to 78,681.48, 118,043.28 and 34,311.84

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Solution

The fourth proportional to 78,681.48, 118,043.28 and 34,311.84 is: 51,476.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,681.48 : 118,043.28 = 34,311.84 : x
  2. Step 2: Convert to fraction form
    78,681.48/118,043.28 = 34,311.84/x
  3. Step 3: Cross multiply
    78,681.48x = 118,043.28 × 34,311.84
  4. Step 4: Simplify right side
    78,681.48x = 4,050,282,136.44
  5. Step 5: Solve for x
    x = 4,050,282,136.44/78,681.48
  6. Step 6: Final answer
    x = 51,476.94

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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.