Home / 72,971,525.40-100,700,715-39,931,782.33

Finding the Fourth Proportional to 72,971,525.40, 100,700,715 and 39,931,782.33

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Solution

The fourth proportional to 72,971,525.40, 100,700,715 and 39,931,782.33 is: 55,105,865.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,971,525.40 : 100,700,715 = 39,931,782.33 : x
  2. Step 2: Convert to fraction form
    72,971,525.40/100,700,715 = 39,931,782.33/x
  3. Step 3: Cross multiply
    72,971,525.40x = 100,700,715 × 39,931,782.33
  4. Step 4: Simplify right side
    72,971,525.40x = 4,021,159,031,855,366
  5. Step 5: Solve for x
    x = 4,021,159,031,855,366/72,971,525.40
  6. Step 6: Final answer
    x = 55,105,865.06

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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.