Home / 86,943,987.90-130,415,981.85-52,931,763.90

Finding the Fourth Proportional to 86,943,987.90, 130,415,981.85 and 52,931,763.90

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Solution

The fourth proportional to 86,943,987.90, 130,415,981.85 and 52,931,763.90 is: 79,397,645.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,943,987.90 : 130,415,981.85 = 52,931,763.90 : x
  2. Step 2: Convert to fraction form
    86,943,987.90/130,415,981.85 = 52,931,763.90/x
  3. Step 3: Cross multiply
    86,943,987.90x = 130,415,981.85 × 52,931,763.90
  4. Step 4: Simplify right side
    86,943,987.90x = 6,903,147,960,070,885
  5. Step 5: Solve for x
    x = 6,903,147,960,070,885/86,943,987.90
  6. Step 6: Final answer
    x = 79,397,645.85

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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.