Home / 86,020,512.80-128,818,192.80-57,110,122.40

Finding the Fourth Proportional to 86,020,512.80, 128,818,192.80 and 57,110,122.40

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Solution

The fourth proportional to 86,020,512.80, 128,818,192.80 and 57,110,122.40 is: 85,524,051.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,020,512.80 : 128,818,192.80 = 57,110,122.40 : x
  2. Step 2: Convert to fraction form
    86,020,512.80/128,818,192.80 = 57,110,122.40/x
  3. Step 3: Cross multiply
    86,020,512.80x = 128,818,192.80 × 57,110,122.40
  4. Step 4: Simplify right side
    86,020,512.80x = 7,356,822,758,154,798
  5. Step 5: Solve for x
    x = 7,356,822,758,154,798/86,020,512.80
  6. Step 6: Final answer
    x = 85,524,051.40

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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.