Home / 39,970.81-59,979.98-17,785.45

Finding the Fourth Proportional to 39,970.81, 59,979.98 and 17,785.45

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Solution

The fourth proportional to 39,970.81, 59,979.98 and 17,785.45 is: 26,688.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,970.81 : 59,979.98 = 17,785.45 : x
  2. Step 2: Convert to fraction form
    39,970.81/59,979.98 = 17,785.45/x
  3. Step 3: Cross multiply
    39,970.81x = 59,979.98 × 17,785.45
  4. Step 4: Simplify right side
    39,970.81x = 1,066,770,935.29
  5. Step 5: Solve for x
    x = 1,066,770,935.29/39,970.81
  6. Step 6: Final answer
    x = 26,688.75

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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.