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Finding the Fourth Proportional to 94,860.76, 130,915.62 and 52,420

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Solution

The fourth proportional to 94,860.76, 130,915.62 and 52,420 is: 72,343.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,860.76 : 130,915.62 = 52,420 : x
  2. Step 2: Convert to fraction form
    94,860.76/130,915.62 = 52,420/x
  3. Step 3: Cross multiply
    94,860.76x = 130,915.62 × 52,420
  4. Step 4: Simplify right side
    94,860.76x = 6,862,596,800.40
  5. Step 5: Solve for x
    x = 6,862,596,800.40/94,860.76
  6. Step 6: Final answer
    x = 72,343.89

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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.