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Finding the Fourth Proportional to 79,242,603.60, 118,884,900.60 and 28,119,291.60

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Solution

The fourth proportional to 79,242,603.60, 118,884,900.60 and 28,119,291.60 is: 42,186,387.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,242,603.60 : 118,884,900.60 = 28,119,291.60 : x
  2. Step 2: Convert to fraction form
    79,242,603.60/118,884,900.60 = 28,119,291.60/x
  3. Step 3: Cross multiply
    79,242,603.60x = 118,884,900.60 × 28,119,291.60
  4. Step 4: Simplify right side
    79,242,603.60x = 3,342,959,186,808,415
  5. Step 5: Solve for x
    x = 3,342,959,186,808,415/79,242,603.60
  6. Step 6: Final answer
    x = 42,186,387.56

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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.