Home / 78,368.49-117,552.42-25,777.98

Finding the Fourth Proportional to 78,368.49, 117,552.42 and 25,777.98

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Solution

The fourth proportional to 78,368.49, 117,552.42 and 25,777.98 is: 38,666.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,368.49 : 117,552.42 = 25,777.98 : x
  2. Step 2: Convert to fraction form
    78,368.49/117,552.42 = 25,777.98/x
  3. Step 3: Cross multiply
    78,368.49x = 117,552.42 × 25,777.98
  4. Step 4: Simplify right side
    78,368.49x = 3,030,263,931.71
  5. Step 5: Solve for x
    x = 3,030,263,931.71/78,368.49
  6. Step 6: Final answer
    x = 38,666.87

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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.