Home / 77,145,288.96-115,718,582.16-19,637,569.92

Finding the Fourth Proportional to 77,145,288.96, 115,718,582.16 and 19,637,569.92

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Solution

The fourth proportional to 77,145,288.96, 115,718,582.16 and 19,637,569.92 is: 29,456,520.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,145,288.96 : 115,718,582.16 = 19,637,569.92 : x
  2. Step 2: Convert to fraction form
    77,145,288.96/115,718,582.16 = 19,637,569.92/x
  3. Step 3: Cross multiply
    77,145,288.96x = 115,718,582.16 × 19,637,569.92
  4. Step 4: Simplify right side
    77,145,288.96x = 2,272,431,748,210,265
  5. Step 5: Solve for x
    x = 2,272,431,748,210,265/77,145,288.96
  6. Step 6: Final answer
    x = 29,456,520.01

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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.