Home / 85,644,528.80-128,424,284.40-31,054,935.20

Finding the Fourth Proportional to 85,644,528.80, 128,424,284.40 and 31,054,935.20

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Solution

The fourth proportional to 85,644,528.80, 128,424,284.40 and 31,054,935.20 is: 46,566,989.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,644,528.80 : 128,424,284.40 = 31,054,935.20 : x
  2. Step 2: Convert to fraction form
    85,644,528.80/128,424,284.40 = 31,054,935.20/x
  3. Step 3: Cross multiply
    85,644,528.80x = 128,424,284.40 × 31,054,935.20
  4. Step 4: Simplify right side
    85,644,528.80x = 3,988,207,830,148,371
  5. Step 5: Solve for x
    x = 3,988,207,830,148,371/85,644,528.80
  6. Step 6: Final answer
    x = 46,566,989.00

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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.