Home / 78,417,931.80-117,626,897.70-46,085,323.80

Finding the Fourth Proportional to 78,417,931.80, 117,626,897.70 and 46,085,323.80

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Solution

The fourth proportional to 78,417,931.80, 117,626,897.70 and 46,085,323.80 is: 69,127,985.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,417,931.80 : 117,626,897.70 = 46,085,323.80 : x
  2. Step 2: Convert to fraction form
    78,417,931.80/117,626,897.70 = 46,085,323.80/x
  3. Step 3: Cross multiply
    78,417,931.80x = 117,626,897.70 × 46,085,323.80
  4. Step 4: Simplify right side
    78,417,931.80x = 5,420,873,668,093,975
  5. Step 5: Solve for x
    x = 5,420,873,668,093,975/78,417,931.80
  6. Step 6: Final answer
    x = 69,127,985.70

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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.