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Finding the Fourth Proportional to 78,697,673.80, 118,046,510.70 and 24,837,987.40

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Solution

The fourth proportional to 78,697,673.80, 118,046,510.70 and 24,837,987.40 is: 37,256,981.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,697,673.80 : 118,046,510.70 = 24,837,987.40 : x
  2. Step 2: Convert to fraction form
    78,697,673.80/118,046,510.70 = 24,837,987.40/x
  3. Step 3: Cross multiply
    78,697,673.80x = 118,046,510.70 × 24,837,987.40
  4. Step 4: Simplify right side
    78,697,673.80x = 2,932,037,745,380,565
  5. Step 5: Solve for x
    x = 2,932,037,745,380,565/78,697,673.80
  6. Step 6: Final answer
    x = 37,256,981.10

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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.