Home / 60,971.81-91,434.69-20,979.45

Finding the Fourth Proportional to 60,971.81, 91,434.69 and 20,979.45

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Solution

The fourth proportional to 60,971.81, 91,434.69 and 20,979.45 is: 31,461.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,971.81 : 91,434.69 = 20,979.45 : x
  2. Step 2: Convert to fraction form
    60,971.81/91,434.69 = 20,979.45/x
  3. Step 3: Cross multiply
    60,971.81x = 91,434.69 × 20,979.45
  4. Step 4: Simplify right side
    60,971.81x = 1,918,249,507.12
  5. Step 5: Solve for x
    x = 1,918,249,507.12/60,971.81
  6. Step 6: Final answer
    x = 31,461.26

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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.