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Finding the Fourth Proportional to 74,835, 112,130.40 and 34,810.50

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Solution

The fourth proportional to 74,835, 112,130.40 and 34,810.50 is: 52,158.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,835 : 112,130.40 = 34,810.50 : x
  2. Step 2: Convert to fraction form
    74,835/112,130.40 = 34,810.50/x
  3. Step 3: Cross multiply
    74,835x = 112,130.40 × 34,810.50
  4. Step 4: Simplify right side
    74,835x = 3,903,315,289.20
  5. Step 5: Solve for x
    x = 3,903,315,289.20/74,835
  6. Step 6: Final answer
    x = 52,158.95

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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.