Home / 78,881,462.40-118,312,862.40-21,370,166.40

Finding the Fourth Proportional to 78,881,462.40, 118,312,862.40 and 21,370,166.40

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Solution

The fourth proportional to 78,881,462.40, 118,312,862.40 and 21,370,166.40 is: 32,052,721.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,881,462.40 : 118,312,862.40 = 21,370,166.40 : x
  2. Step 2: Convert to fraction form
    78,881,462.40/118,312,862.40 = 21,370,166.40/x
  3. Step 3: Cross multiply
    78,881,462.40x = 118,312,862.40 × 21,370,166.40
  4. Step 4: Simplify right side
    78,881,462.40x = 2,528,365,556,748,303.50
  5. Step 5: Solve for x
    x = 2,528,365,556,748,303.50/78,881,462.40
  6. Step 6: Final answer
    x = 32,052,721.64

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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.