Home / 74,970.48-112,400.17-45,381.32

Finding the Fourth Proportional to 74,970.48, 112,400.17 and 45,381.32

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Solution

The fourth proportional to 74,970.48, 112,400.17 and 45,381.32 is: 68,038.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,970.48 : 112,400.17 = 45,381.32 : x
  2. Step 2: Convert to fraction form
    74,970.48/112,400.17 = 45,381.32/x
  3. Step 3: Cross multiply
    74,970.48x = 112,400.17 × 45,381.32
  4. Step 4: Simplify right side
    74,970.48x = 5,100,868,082.82
  5. Step 5: Solve for x
    x = 5,100,868,082.82/74,970.48
  6. Step 6: Final answer
    x = 68,038.35

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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.