Home / 85,644,530.80-128,424,287.40-31,054,937.20

Finding the Fourth Proportional to 85,644,530.80, 128,424,287.40 and 31,054,937.20

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Solution

The fourth proportional to 85,644,530.80, 128,424,287.40 and 31,054,937.20 is: 46,566,991.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,644,530.80 : 128,424,287.40 = 31,054,937.20 : x
  2. Step 2: Convert to fraction form
    85,644,530.80/128,424,287.40 = 31,054,937.20/x
  3. Step 3: Cross multiply
    85,644,530.80x = 128,424,287.40 × 31,054,937.20
  4. Step 4: Simplify right side
    85,644,530.80x = 3,988,208,180,161,751.50
  5. Step 5: Solve for x
    x = 3,988,208,180,161,751.50/85,644,530.80
  6. Step 6: Final answer
    x = 46,566,991.99

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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.