Home / 90,701.40-135,938.70-46,345.80

Finding the Fourth Proportional to 90,701.40, 135,938.70 and 46,345.80

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Solution

The fourth proportional to 90,701.40, 135,938.70 and 46,345.80 is: 69,460.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,701.40 : 135,938.70 = 46,345.80 : x
  2. Step 2: Convert to fraction form
    90,701.40/135,938.70 = 46,345.80/x
  3. Step 3: Cross multiply
    90,701.40x = 135,938.70 × 46,345.80
  4. Step 4: Simplify right side
    90,701.40x = 6,300,187,802.46
  5. Step 5: Solve for x
    x = 6,300,187,802.46/90,701.40
  6. Step 6: Final answer
    x = 69,460.76

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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.