Home / 56,021.07-77,312.82-30,870.57

Finding the Fourth Proportional to 56,021.07, 77,312.82 and 30,870.57

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Solution

The fourth proportional to 56,021.07, 77,312.82 and 30,870.57 is: 42,603.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,021.07 : 77,312.82 = 30,870.57 : x
  2. Step 2: Convert to fraction form
    56,021.07/77,312.82 = 30,870.57/x
  3. Step 3: Cross multiply
    56,021.07x = 77,312.82 × 30,870.57
  4. Step 4: Simplify right side
    56,021.07x = 2,386,690,821.71
  5. Step 5: Solve for x
    x = 2,386,690,821.71/56,021.07
  6. Step 6: Final answer
    x = 42,603.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.