Home / 39,987.79-59,888.40-31,611.58

Finding the Fourth Proportional to 39,987.79, 59,888.40 and 31,611.58

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Solution

The fourth proportional to 39,987.79, 59,888.40 and 31,611.58 is: 47,343.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,987.79 : 59,888.40 = 31,611.58 : x
  2. Step 2: Convert to fraction form
    39,987.79/59,888.40 = 31,611.58/x
  3. Step 3: Cross multiply
    39,987.79x = 59,888.40 × 31,611.58
  4. Step 4: Simplify right side
    39,987.79x = 1,893,166,947.67
  5. Step 5: Solve for x
    x = 1,893,166,947.67/39,987.79
  6. Step 6: Final answer
    x = 47,343.63

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1.5x scale

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.