Home / 56,855.19-78,460.47-31,362.45

Finding the Fourth Proportional to 56,855.19, 78,460.47 and 31,362.45

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Solution

The fourth proportional to 56,855.19, 78,460.47 and 31,362.45 is: 43,280.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,855.19 : 78,460.47 = 31,362.45 : x
  2. Step 2: Convert to fraction form
    56,855.19/78,460.47 = 31,362.45/x
  3. Step 3: Cross multiply
    56,855.19x = 78,460.47 × 31,362.45
  4. Step 4: Simplify right side
    56,855.19x = 2,460,712,567.35
  5. Step 5: Solve for x
    x = 2,460,712,567.35/56,855.19
  6. Step 6: Final answer
    x = 43,280.35

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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.