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Finding the Fourth Proportional to 78,955.95, 118,452.51 and 25,647.76

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Solution

The fourth proportional to 78,955.95, 118,452.51 and 25,647.76 is: 38,477.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,955.95 : 118,452.51 = 25,647.76 : x
  2. Step 2: Convert to fraction form
    78,955.95/118,452.51 = 25,647.76/x
  3. Step 3: Cross multiply
    78,955.95x = 118,452.51 × 25,647.76
  4. Step 4: Simplify right side
    78,955.95x = 3,038,041,547.88
  5. Step 5: Solve for x
    x = 3,038,041,547.88/78,955.95
  6. Step 6: Final answer
    x = 38,477.68

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1.5x scale

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.