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Finding the Fourth Proportional to 79,247,999.60, 118,871,999.40 and 51,506,779.40

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Solution

The fourth proportional to 79,247,999.60, 118,871,999.40 and 51,506,779.40 is: 77,260,169.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,247,999.60 : 118,871,999.40 = 51,506,779.40 : x
  2. Step 2: Convert to fraction form
    79,247,999.60/118,871,999.40 = 51,506,779.40/x
  3. Step 3: Cross multiply
    79,247,999.60x = 118,871,999.40 × 51,506,779.40
  4. Step 4: Simplify right side
    79,247,999.60x = 6,122,713,849,932,732
  5. Step 5: Solve for x
    x = 6,122,713,849,932,732/79,247,999.60
  6. Step 6: Final answer
    x = 77,260,169.10

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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.