Home / 91,048.78-136,501.89-57,762.64

Finding the Fourth Proportional to 91,048.78, 136,501.89 and 57,762.64

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Solution

The fourth proportional to 91,048.78, 136,501.89 and 57,762.64 is: 86,598.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,048.78 : 136,501.89 = 57,762.64 : x
  2. Step 2: Convert to fraction form
    91,048.78/136,501.89 = 57,762.64/x
  3. Step 3: Cross multiply
    91,048.78x = 136,501.89 × 57,762.64
  4. Step 4: Simplify right side
    91,048.78x = 7,884,709,531.39
  5. Step 5: Solve for x
    x = 7,884,709,531.39/91,048.78
  6. Step 6: Final answer
    x = 86,598.74

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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.