Home / 91,421,809.40-137,153,036.80-42,873,788.32

Finding the Fourth Proportional to 91,421,809.40, 137,153,036.80 and 42,873,788.32

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Solution

The fourth proportional to 91,421,809.40, 137,153,036.80 and 42,873,788.32 is: 64,320,213.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,421,809.40 : 137,153,036.80 = 42,873,788.32 : x
  2. Step 2: Convert to fraction form
    91,421,809.40/137,153,036.80 = 42,873,788.32/x
  3. Step 3: Cross multiply
    91,421,809.40x = 137,153,036.80 × 42,873,788.32
  4. Step 4: Simplify right side
    91,421,809.40x = 5,880,270,267,208,371
  5. Step 5: Solve for x
    x = 5,880,270,267,208,371/91,421,809.40
  6. Step 6: Final answer
    x = 64,320,213.15

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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.